Chimney-cowl



(No Model.)

I. J. TURNER.

GHIMNBY GoWL.

N0. 410,660. Patented Sept. l0, 1889.

I l" OQQM@ @7X/UIMM @@MWM #ff/2% UNITED STATES PATENT OFFICE.

ISAAC JACKSON TURNER, OF PRINCETON, NEIV JERSEY.

CHlMNEY-COWL.

SPECIFICATION forming part of Letters Patent No. 410,660, datedSeptember 10, 1889.

Application filed January 8, 1889. Serial No. 295,747. (No model.)

T0 all whom it may concern.'

Be it known that I, ISAAC JACKSON TURNER, a subject of the Queen ofGreat Britain, at present residing at Princeton, Mercer county, andState of New Jersey, have invented certain new and useful Improvementsin Chimney Cowls or Ventilators, of which the following is aspecification.

In an application for Let-ters Patent filed by me May l2, 1888, andserially numbered 273,714, I have shown and described a chimney-cowl inwhich improved means are employed for permitting the smoke from achimney to have a ready exit and currents of air from the outside areprevented from entering the chimney, so as to cause a downdraft thatwould impede the exit of smoke' and upward currents of gas and air.

My present invention has the same general objects in view; but thedetails of construction of :my improved cowl or ventilator are somewhatdifferent from those shown in my above-m entioned application, anddevices are provided whereby the cowl may be opened to admit of cleaningthe interior of the cowl and Y ilues and the opening at the top of thecowl may be adjusted to regulate the drafts.

In the accompanying drawings, Figure l is a vertical central sectionthrough my iinproved chimney cowl or ventilator, showing the adjustingdevices in elevation. Fig. 2 is a similar view showing a modification.Fig. 3 is a perspective view, partly broken away, showing a hinged capfor the cowl; and Fig. 4 is a perspective view, partly broken away, of amodified form of cowl, showing it applied to a chimney.

The cowl shown in Fig. l consists of a cylindrical body portion or flueA, around the upper end of which is secured a cylindrical top piece orguard l5. The bottom b of the guard is formed with a downturned flangeb', which fits closely the exterior of the flue A a short distance belowits upper end. The outside ilange h2 of the guard extends above theupper edge of the flue.

The top plate or cap C is disk-shaped or circular, of slightly greaterdiameter than the guard B, and is provided with a bearing-ring c, which,when the cap is lowered sufficiently, bears against the upper edge ofthe iiue.

A deflector plate or disk D, of less diameter than the top plate or capC, but of considerably greater diameter than the flue A, is supportedfrom the cap C by hanger d. The plate D serves to deflect the smoke,air, dac., as they ascend from the flue A, and cause them to take thedirection indicated by the arrows l--that is, the smoke, dac., strikesthe plate D, is deflected at right angles, and then passes over the edgeof the guard out under the cap C. This arrangement also prevents wind ordrafts of air from the outside from passing into the chimney; for if airenters the cowl below the cap it strikes the top of the plate D andpasses out at the opposite side, as indicated by arrow 2.

The cap C and the plate D are supported by a rod E, which extendsvertically and centrally through the flue A and is guided and supportedin brackets or cross-pieces F F', placed near the upper and lower endsof the flue. rlhe upper end of the rod Eis swiveled to the cap C andsecured by nuts to the flanges e in any suitable way. The rod passesfreely through the plate D and bracket F and the bracket F', whichlatter is provided with a female screw, with which a male screw e on therod engages. The lower end of the rod is provided with a handle e2. Byadjusting the rod the cap C and plate D may be raised and lowered tovary the opening between the top of the flue and the detlector-plate andbetween the top of the guard and the cap, thus regulating the draft toany desired degree, or, if desired, completely closing the cowl.4 Inthis inst-ance it is necessary to remove the cowl from the chimney inorder to adjust the rod; but where the device is used as a Ventilatorfor cars, ships, dac., it may be adjusted from the inside Withoutremoval.

In Fig. 2 I have shown devices for adjusting the rod withoutremoving thecowl. This figure also shows certain other modifications. The guard B isin this instance formed with a funnelshaped bottom l), the lower flangededge of which fits closely around the flue A. The upper edge of theguard projects above the top of the fine, as in Fig. l. An annulardefiector-flange G is formed on or secured to the exterior of the flue ashort distance below its upper edge. The flange extends horizontallyfrom the flue 01 body port-ion A to- IOO ward the flange of the guard B,but terminates before reaching it, leaving an annular opening betweenits outer edge and the vertical sides of the guard. The deflector D inthis instance is provided with a downwardlyprojecting annular fiange D',which, when lowered sufficiently, rests on the top of the fiange G. Thetop plate or cap C is supported on the defiector-plate D by brackets c',which hold the cap a suitable distance away from the deflector. L-shapedguidebars g, secured to the guard B, fit into eyes g' of the deflectorand permit of its being raised and lowered at will without lateralmovement. The adj usting-rod E is supported at its lower end in abracket F', in which it is free to turn, and also extends through aguidelbracket F, near the upper end of the fiue. The

upper end of the rod E is screw-threaded and extends freely through thedefiector D and cap C and is pro vided with an adj listing-wheel H,which has a hub h, internalljT screw-threaded for engagement with thescrew-threaded end of the rod E. The hub h is provided with an annulargroove h', into which fits loosely a flan ged plate I, secured to thecap C, so that as the wheel is raised and lowered the cap C will becorrespondingly moved. By this arrangement the cowl may be adjusted fromthe outside without removing it from the chimney. The course of thesmoke, duc., from the chimney is indicated by arrows l. The course ofoutside currents entering the cowl is indicated by arrows 2. Thesecurrents, it will be observed, pass under the cap and over the top ofthe defiector.

In Fig. 3 the main body of the cowlis formed and shaped like that shownin Fig. 2-11 e., the flue or body portion A, guard B, flange G, cap C,and deflector D are the same; but the adjusting devices are dispensedwith, and a bracket J is employed, which is hinged to guard B and holdsthe cap and defiector at a suitable elevation. J indicates a support forthe cap when closed. By this arrangement the cowl may be opened topermit of the flues being cleaned, sliould it be so desired.

In Fig. 4 the cowl is made rectangular and the general con struction isconsiderably modified. The long flue or body portion A is dispensedwith, but its place is taken by a short flue or body portion A', whichextends around the edge of the fiues of the chimney. The guard B extendsabove the edge of the flue A', and also extends below the top of thechimney and closely fits around the top of the chimney, so as to holdthe cowl in position.

' The guard B may be formed to fit any form of chimney.Alaterally-projecting fiange G connects the bottom of the flue A' withthe guard. This flange rests on the top of the chimney. A deflector orflange below the top of the flue A' and above the ange G projects fromthe iiue A toward the guard B, but terminates before reaching it, so asto leave a passage between its outer edge and the inner side of theguard Thecap C extends over the guard B and is supported and held asuitable distance away by brackets B', secured to the edges of the capand the guard. The defiector D ,is formed with a downwardlyprojectingfiange, as in Figs. 2 and 3, and is supported from the cap C, so as toleave a space between its upper side and the cap and between its underside and its downwardlyprojecting flange and the fiue A', thedeflector-tlange G, and guard B.

A hole o may be formed in the guard B to allow water to run out.

Smoke issuing from the flues passes over the top of the flue A', downunder the downwardly-projecting flange or deflector, and out over theupper edge of the guard B. Currents of air from the outside areprevented by the deliector from entering the fiues of the chimney, asabove described. Outside' currents of air striking the cowl from anydirection cause a strong upward draft in the fiue or ventilator.

I claim as my invention- 1. The combination, substantially ashereinbefore set forth, of the due or body portion, the guard around theupper edge of the iiue or body portion and extending above it, a fiatdeflector or disk above the flue, and the imperforate top plate or capabove the defiector.

2. The combination, substantially as set forth, of the flue, theimperforate top plate or cap, and the fiat deflector below the cap andabove the flue and held away from the cap.

3. The combination, substantially as hereinbefore set forth, of theflue, the guard around the upper end of the flue, the cap above theguard, and the defieotor, having a downwardly-projecting flange belowthe cap and above the flue.

4. The combination, substantially as hereinbefore set forth, of thefiue, the guard around the upper end of the flue, the imperforate topplate or cap above the guard, the flat defiector having adownwardly-proj ecting flange below the cap and over the flue, and thedeflector-fiange G below the upper end of the flue.

5. The combination, substantially as hereinbefore set forth, of theflue, a guard around the upperA end of the flue, an adjustable cap abovethe guard, and an adjustable defiector 4 below the cap and within theguard.

6. The combination, substantially as hereinbefore'set forth, of the ue,the cap,`tl1e deiiector below the cap and above the fiue, theadjusting-rod, the supporting brackets, and device, substantially asdescribed, on the rod for varyin g the distance between the deflectorVand the upper end of the flue.

7. The combination, substantially as hereinbefore set forth, of thefiue, the' guard around the upper end of the flue, the deflectorfiangearound the upper end of the fiue within the guard, the deflector abovethe flue and having downwardly-projecting flanges, the

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cap above the deiector, the brackets which In testimony whereof I havehereunto subconn'ect the cap to the deiector, the adjustscribed my name.ing-rod, Ithe brackets in the flue in which it is mounted, theadjusting-Wheel adjustably ISAAC JACKbON lURNBR' secured to the adjListing-rod, and the flanged Vitnesses:

plate connecting the adjusting-Wheel with D. W. MOCORD,

the cap. LLOYD B. WIGHT.-

